Internal-combustion engine.



J. P. ROBERTS.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED DEO.18, 1912.

1,103,842. Patented July 14,1914

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IllTERNAL-CQMB'USTION ENGINE.

Specification of Letters Patent.

Patent-ed July ltd, 191%.

Application filed December 18, 1912, Serial No. 737cm.

To all whom it may concern:

Be it known that L'Josnrn P. Ronnn'rs, a citizen of the United States, residing at Bell, in the county of Alachua and State of Florida, have invented new and useful improvements in Internal- Combustion Engines, of which the following is-a specification.

This invention relates to internal combustion engines, the object in view being to provide a simple, reliable and noiseless valve mechanism for delivering charges of gas to the combustion space of each cylinder and completely exhausting the burnt gases therefrom in each comglete cycle of movement.

With the "above and other objects in view, the invention consists in the construction, combination and arrangement of parts, as will be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the claims hereunto appended.

In the accompanying drawings:-' Figure l is a diametrical section through the valve seat base and easing. Fig. 2 isa section taken at right angles to Fig. Fig. 3 is a perspective view of the valve seat base. Fig. 4: is a similar view of the valve seat sections. Figsf) is a similar view of the valve. Fig. 6 is a similar view of the expansion ring.

Referring to the drawings 1 designates a.

cylinder wall, 2 the valve casing and 3 the valve shalt.

In order to admit gas to the interior of the cylinder 1, the latter is provided with a port d1.

The valve comprises a valve seat base 43 which is stationary and substantially diskshaped and provided with a port 44 through the same, adapted to have coupled thereto either a branch of the intake or exhaust manifold, as the case ma be. The diskshaped base is also providied with substantially semi-circular grooves 45 in which are received the circumferential fla ages lG of a diametrically divided :or split valve seat, the two semi-cylindrical sections of which are designated 47. Thee valve seat sections 47 are secured to the valve seat base by means of semi-circular retainers l8 fastened by screws 49 or their equivalent to the base 43. flanges 46 of the valve seat sections in the grooves 45, they admit of a sufiicient amount of movement of the valve seat sections to and overlapping tongues and While these retainers 18 confine the permit the same to be expanded into contact with the surrounding valve hereinafter de scribed. The valve seat sections 47 are also cut away to form a gas port 50 adapted during each revolution of the valve shaft to re ister with port 41.

ithin the valve seat is arranged an expansion spring ring 52 which is divided, as shown at 5,3 and provided with interfitting rooves 54. This expansion ringis also provlded with a gas port 55 which is maintained in alinement with the port 50. in the valve seat. Extending around thevalve seat is a cylindrical valve 56 which is provided in its cylindrical wall with a gas port 57 adapted in each revolution of the valve shaft to register with the orts 50 and 55 hereinabove referred to. T is valve is closed at one side by an end wall or web 58 and the latter is formed with a hole 59 to receive the valve shaft 3 and also a keyway 60 adapting said valve to be keyed to the valve shaft so as to rotate therewith. stood that the expansion ring 52 exerts an outward pressure from Within and against the valve seat sections 47, causing the latter It will .now be under to bear snugly against the interior of the valve 56,,thus preventing leakage of gas. 3

spring 61 presses against the outside of the valve 56 so as to hold the same against the valtze seat base and in proper relation to the valve seat.

By the means hereinbefore described, high maximum efliciency and power of the englue is obtained without any unnecessary complication and a practlcally nolseless mo-.

tor results in. View of the fact that all poppet valves are dispensed with and rotary valves substituted therefor.

The silent action is further enhanced by providing an oil trough in,the bottom of each valve casing 2 in which the lower portion of the valve revolves, thus keeping all parts of the valve in a perfectly lubricated condition.

I claim 1. Valve mechanism for internal combustion engines embodying a rotary valvoshaft, a stationary ported valve seat base, a; orted cylindrical valve seat thereon, and a ported cylindrical .valve fast on the ro-ury valve shaft and working in contact with the valve seat.

2. Valve mechanism for internal combos tion engines embodying a rotary valve shaft,

a stationary ported valveseat base, a ported cylindrical expansion valve seat thereon, and a ported cylindrical valve fast on the rotary valve shaft and working in contact with'the valve seat.

3. Valve mechanism for-internal combustion engines embodying a rotary valve shaft, a stationary ported valve seat base, a ported cylindrical valve seat thereon, and a ported l cylindrical valve fast on the rotary valve shaft and encircling and working in contact with the valve seat.

4:. Valve mechanism for internal combustion engines embodying a rotary valve shaft, a stationary ported valve seat base, a ported cylindrical valve seat thereon, a ported cylindrical valve fast on the rotary valve shaft and working in contact with the valve seat, and a spring holding the valve against the valveseat.

5. Valve mechanism for internal combustion engines embodying a rotary valve shaft, a stationary ported vided and ported cylindrical valve seat thereon, and a ported cylindrical valve fast on the rotary valve shaft and working in contact with the valve seat.

6. Valve mechanism for internal combustion engines embodying a rotary valve shaft, a stationary ported valve seat base, a ported cylindrical valve seat thereon, a ported cylindrical valve fast on the rotary valve shaft and Workingin contact with the valve seat, and an expansion spring within said seat. 7. Valve mechanism for internal combusvalve seat base, a dis tion engines embodying a rotary valve shaft, a stationary disk-shaped valve seat'base pro-- vided with a gas port and arcuate grooves, a sectional cylindrical valve seat seated. in said grooves and a cylindrical valve surrounding said seat and fast on the rotary valve shaft, and means for expanding the valve seat into contact with-the valve.

8. Valve mechanism for internal cornbustion engines embodying a rotary valve shaft a'station: r'y disk-shaped valve seat base, pro-v vided Wlil a port and arcuate grooves,

a sectional cylindrical valve seat seated in said grooves and provided with a gas port, a cylindrical valve surrounding saidv seat and fast on the rotary valve shaft, and a split expansion ring within the valve seat' provided with a gas port which registers with the port inthe valve seat. 5*

9. Valve mechanism for internal combustion engines embodying a rotary valve shaft,

a stationary ported valve seat base, a ported cylindrical valve seat thereon, a ported cylinclrical valve fast on the rotary valve shaft and Working in Contact with the valve seat, and an'oil'reservoir in the bottom of the valve casing in which the valve revolves.

In testimony whereof I affix my signature valve casing in which the valve revolves v JOSEPH P. ROBERTS.

Witnesses;

J. P. CLARK, L. O. HAnvEY.

provided with a gas port, 4o, 

